Fritz heeti



Patented May 6, 1930 UNITED STATES PATENT OFFICE FRITZ HEFTI, 02E ALTSTETTEN, NEAR ZURICH, SWITZERLAND IBARBITURIG-ACID COMPOUND No Drawing. Application filed August 2, 1928, Serial No. 297,118, and in Switzerland March 9, 1928.

It has been discovered that by melting of allylphenylbarbituric-acid and t-dimethylamino-2-3-dimethyl-l-phenyl-5rpyrazolon a compound is obtained which is most efiicient and valuable analgetica and sedativa reme- Ewamgole 24,4 gins. of phenylallylbarbituric acid and 23,1 gms. t-dimethylamino-2-8-dimethyl-1- phenyl-5-pyrazolon are heated and molten at 115 C. the mass being stirred continuously. The product obtained has a yellowish colour and a melting point of 110113 C. It is easily soluble in alcohol, acetone and ether but little soluble in hot ligroin and hardly soluble in cold water.

What I wish to secure by U. S. Letters Patent, is

0 As a new compound the product of the interaction of phenyl-allylbarbituric acid and 1-phenyl-2,3-dimethyl-4-dimethylamino- 5-pyrazolon which possess valuable hypnotic and analgetic properties.

In testimony whereof I affix my signature.

FRITZ HEFTI. 

